Parts list – O.S. Engines 3H Carb - 22981000 User Manual

Page 4

4. Remove needle from needle-valve assembly, followed by

hexagonal retaining nut and ratchet spring. Now push
nozzle unit through body from outside.

5. Remove fuel inlet nipple.
6. Immerse parts in solvent (e.g. gasoline, alcohol or carbon-

tetrachloride) and clean thoroughly.

7. Re-assemble in reverse order. Note that periphery of

nozzle flange is specially shaped to key into carburettor
body.

Note:

This carburettor is fitted with a short tubular seal (2.5 mm
bore, 5.0 mm outer dia., 7 mm length) between the needle
and body to prevent air leakage into, or fuel leakage from,
the needle-valve. When the seal becomes worn or damaged

after a long period of use, replace with the spare seal pro-

vided, or cut a short piece of silicone fuel tubing as a replace-
ment.

PARTS LIST

Description

Throttle lever assembly

Throttle lever fixing screw

Throttle lever

Mixture control screw

"0" ring

Throttle rotor

Rotor spring

Carburettor body

Throttle stop screw (w/nut)

Nipple ( w / w a s h e r )

Carburettor rubber gasket

Carburettor fixing screws

Needle valve assembly

Needle

Set-screw

Nozzle assembly

Ratchet spring

"0" ring

c°,8=]-h

Code No.

22981400

22781401

22781420

22981410

22781411

22981600

22781800

22981200

22481506

22981100

22681306

22681953

22615000

23081706

22981900

45181973

26381501

22981960

22611302

24881824

The specifications are subject to alteration for improvement without notice

6-15 3-chome Imagawa H i g a s h i s u m i y o s h i - k u
Osaka 546, Japan T E L (06) 702-0225

FAX (06)704-2722

109301